Our region has just been hit by two significant events that affect the health of our community.

While we have long awaited some relief for our drought, torrential rainstorms inundated the Santa Susana Field Lab, one of the most polluted places in the state. Runoff from far lesser storms in recent years resulted in more than 200 instances in which highly toxic and radioactive contaminants migrated off site at levels in excess of state pollution limits, and one can only imagine the effect these recent large storms have had.

Around the same time, the Department of Energy broke its solemn cleanup commitments and announced it would leave as much as 94 percent of the soil contaminated at the field lab site not cleaned up. Unless people rise up and our elected officials act strongly to enforce the promises, people in neighboring communities will be at perpetual risk from migrating radioactivity and toxic chemicals.

The field lab housed 10 nuclear reactors, of which at least four suffered accidents, including a partial nuclear meltdown in 1959. There was a factory for fabricating reactor fuel rods out of plutonium, perhaps the most dangerous substance on earth. In a “hot lab” there, highly irradiated nuclear fuel rods shipped in from around the nation were cut apart, with several radioactive fires.

It illegally burned radioactive and chemically hazardous wastes in open air pits, by shooting barrels of the waste with rifles to ignite them, with the toxic plumes blown over surrounding communities. It conducted tens of thousands of rocket tests, many using very dangerous fuels, and then flushed out the engines with a million gallons of toxic solvents that were allowed to simply percolate into the soil and groundwater.

The result of this shameful violation of basic environmental protections is widespread contamination of groundwater, surface water and soil with strontium-90, cesium-137, plutonium-239, perchlorate, PCBs, dioxins, heavy metals, volatile organic compounds and much more. And because the site sits in the hills overlooking more than 500,000 people within 10 miles, the contamination wants to flow off site to the places and people below.

The site has been fined more than $1 million in recent years for allowing pollutants to migrate off the property at levels deemed unsafe for people or the environment. And as long as the site doesn’t get cleaned up, that will continue.

These awful materials cause cancers including leukemia, genetic defects, neurological and developmental disorders and other health problems. A federally funded study by Dr. Hal Morgenstern of the University of Michigan found a greater than 60 percent increase in key cancers in people living near the site compared with people living farther away. Another government-funded study by a team from UCLA led by Dr. Yoram Cohen concluded that numerous pollutants from the site had migrated off site at levels in excess of EPA levels of concern.

For these reasons, the community was joyous in 2010 when the Department of Energy and NASA signed legally binding agreements with the California Department of Toxic Substances Control requiring all contamination that could be detected in the soil to be cleaned up by 2017.

It is now 2017 and the cleanup hasn’t even begun. And the DOE just issued a draft environmental impact statement breaking the 2010 cleanup agreement and saying it will only consider three options, none of which comply with its past commitments.

One would leave 34 percent of the contamination in place. A second would leave 86 percent. And the third would walk away from a staggering 94 percent of the contaminated soil, just leaving it in place. The 2010 agreement barred any consideration of leave-in-place alternatives.

The DOE has essentially thumbed its nose at California. Even if the cleanup agreement didn’t exist, the decision on how much toxic pollution to clean up doesn’t rest with the polluter, but with the state regulator. The DOE can’t decide to just walk away from most of the contamination.

But the state has been remarkably silent so far in response to this assault on its authority. Indeed, it has in its own actions undercut the cleanup agreement it signed. Toxic Substances Control is years late on its own environmental impact report and has been busy undermining the cleanup in other ways as well.

In 2010, we were promised that, with a couple of narrow exceptions, all of the soil contamination that could be detected would be cleaned up. Now it appears likely than close to none will be, and the people in the area will continue to be at perpetual risk from migrating radioactive and toxic contamination — unless they speak out now, loud and clear, and their elected representatives do the same.

Robert Dodge, a family physician in Ventura, serves on the boards of Physicians for Social Responsibility, the Nuclear Age Peace Foundation and Citizens for Peaceful Resolutions. Daniel Hirsch is director of the Program on Environmental and Nuclear Policy at UC Santa Cruz and president of the Committee to Bridge the Gap.